Task 20345.
How much heat will be held for 1 hour in S = 1 m ^ 2 surface of the ice thickness h = 25 cm, if the air temperature t1 = 20 ° C, while the water temperature at the surface of the ice t2 = 0 ° C? How many times the intensity of the heat transfer through the ice is higher than through the air, in the absence of heat transfer by convection and radiation?
Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.
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